SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  IF(
    shared_descr.product_id IS NOT NULL, 
    shared_descr.product, descr1.product
  ) as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'tr' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_ult_product_descriptions shared_descr ON shared_descr.product_id = products.product_id 
  AND shared_descr.company_id = 1 
  AND shared_descr.lang_code = 'tr' 
WHERE 
  1 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  products.timestamp desc, 
  products.product_id ASC 
LIMIT 
  0, 32

Query time 0.00734

JSON explain

{
  "query_block": {
    "select_id": 1,
    "filesort": {
      "sort_key": "products.`timestamp` desc, products.product_id",
      "temporary_table": {
        "table": {
          "table_name": "companies",
          "access_type": "system",
          "possible_keys": ["PRIMARY"],
          "rows": 1,
          "filtered": 100
        },
        "table": {
          "table_name": "shared_descr",
          "access_type": "system",
          "possible_keys": ["PRIMARY", "product_id", "company_id"],
          "rows": 0,
          "filtered": 0,
          "const_row_not_found": true
        },
        "table": {
          "table_name": "cscart_categories",
          "access_type": "ALL",
          "possible_keys": ["PRIMARY", "c_status", "p_category_id"],
          "rows": 83,
          "filtered": 100,
          "attached_condition": "(cscart_categories.usergroup_ids = '' or find_in_set(0,cscart_categories.usergroup_ids) or find_in_set(1,cscart_categories.usergroup_ids)) and cscart_categories.`status` in ('A','H') and cscart_categories.storefront_id in (0,1)"
        },
        "table": {
          "table_name": "products_categories",
          "access_type": "ref",
          "possible_keys": ["PRIMARY", "pt"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["category_id"],
          "ref": ["c.cscart_categories.category_id"],
          "rows": 2,
          "filtered": 100,
          "using_index": true
        },
        "table": {
          "table_name": "products",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "status", "idx_parent_product_id"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["c.products_categories.product_id"],
          "rows": 1,
          "filtered": 96.36938477,
          "attached_condition": "products.parent_product_id = 0 and products.company_id = 1 and (products.usergroup_ids = '' or find_in_set(0,products.usergroup_ids) or find_in_set(1,products.usergroup_ids)) and products.`status` = 'A'"
        },
        "table": {
          "table_name": "descr1",
          "access_type": "eq_ref",
          "possible_keys": ["PRIMARY", "product_id"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["product_id", "lang_code"],
          "ref": ["c.products_categories.product_id", "const"],
          "rows": 1,
          "filtered": 100,
          "attached_condition": "trigcond(descr1.lang_code = 'tr')"
        },
        "table": {
          "table_name": "prices",
          "access_type": "ref",
          "possible_keys": [
            "usergroup",
            "product_id",
            "lower_limit",
            "usergroup_id"
          ],
          "key": "usergroup",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "ref": ["c.products_categories.product_id"],
          "rows": 2,
          "filtered": 97.23320007,
          "attached_condition": "prices.lower_limit = 1 and prices.usergroup_id in (0,0,1)",
          "using_index": true
        }
      }
    }
  }
}

Result

product_id product company_name product_type parent_product_id
278 T-shirt, Color: White CS-Cart P 0
280 T-shirt, Color: Black CS-Cart P 0
282 T-shirt, Color: Blue CS-Cart P 0
247 Nokia N1 Pad 7.9" Quad-Core 64bit 2.3GHz 2GB 32GB Android 5.0 CS-Cart P 0
248 X-Box One CS-Cart P 0
241 Apple® - iPad® with Retina® display Wi-Fi - 32GB - White CS-Cart P 0
244 Packard Bell OneTwo CS-Cart P 0
245 Apple - iPhone 5c 32GB Cell Phone - Green CS-Cart P 0
246 GoPro - Hero3+ Black Edition Camera CS-Cart P 0
240 Apple® - iPad® with Retina® display Wi-Fi - 64GB - Black CS-Cart P 0
6 Toshiba 32C120U 32" Class 720P HD LCD TV CS-Cart P 0
66 XRS 9970G CS-Cart P 0
166 Nikon 1 J1 Two-Lens Wide Angle Kit Red CS-Cart P 0
214 ASUS CP6130 CS-Cart P 0
219 Series 3 15.6" Laptop CS-Cart P 0
221 Series 9 13.3" Laptop CS-Cart P 0
223 Samsung Galaxy Tab 8.9 (Wi-Fi Only) - 32GB Metallic Gray CS-Cart P 0
192 Black and White America (CD Pack) CS-Cart P 0
194 U218 Singles (U2TCD020) CS-Cart P 0
195 Crossroads Guitar Festival 2010 (2DVD) CS-Cart P 0
196 Feeding the Monkies At Ma Maison (Zappa) CS-Cart P 0
197 Guitar Man Album Artwork CS-Cart P 0
198 B.B. King One Kind Favor CD Grammy Award Winning CD Manufacturer: Geffen Records Sku: BBK-11ONEKINDFAVORCD Reviewed 2 times CS-Cart P 0
199 B.B. King - Original Greatest Hits CD CS-Cart P 0
200 John Rutter - The Colours of Christmas CS-Cart P 0
201 Beethoven Piano Concertos Nos. 1 & 2 CS-Cart P 0
202 New Year's Concert 2011 Diverse Klassik Welser-moest / Wiener Philharmoniker CS-Cart P 0
203 New Year's Concert 2012 Diverse Wr.Philharmoniker / Jansons,M. / Wr.Sän CS-Cart P 0
204 The Police - The Stewart Copeland Anthology CS-Cart P 0
205 DIR-657 HD Media Router 1000 CS-Cart P 0
206 RT-N66U Dual-Band Wireless-N900 Gigabit Router CS-Cart P 0
207 Asus USB-N53 CS-Cart P 0