SELECT 
  cscart_product_descriptions.product_id, 
  cscart_product_descriptions.short_description, 
  IF(
    cscart_product_descriptions.short_description = '' 
    OR cscart_product_descriptions.short_description IS NULL, 
    cscart_product_descriptions.full_description, 
    ''
  ) AS full_description, 
  cscart_product_descriptions.meta_keywords, 
  cscart_product_descriptions.meta_description, 
  cscart_product_descriptions.search_words, 
  cscart_product_descriptions.promo_text, 
  cscart_product_descriptions.unit_name 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (197) 
  AND cscart_product_descriptions.lang_code = 'tr'

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_descriptions",
      "access_type": "const",
      "possible_keys": ["PRIMARY", "product_id"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "ref": ["const", "const"],
      "rows": 1,
      "filtered": 100
    }
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text unit_name
197 <p> <p>Guitar Man CD</p> <p>George Benson - Guitar Man</p> <p>AUDIO TRACKS:</p> <p>- Tenderly</p> <p>- I Want To Hold Your Hand</p> <p>- My Cherie Amour</p> <p>- Naima</p> <p>- Tequila</p> <p>- Don't Know Why</p> <p>- Lady In My Life</p> <p>- My One And Only Love</p> <p>- Paper Moon</p> <p>- Danny Boy</p> <p>- Since I Fell For You</p> <p>- Fingerlero</p> <p>FILE:</p> <p>- George Benson - Guitar Man Digital Album Booklet</p> <p>George Benson - Guitar Man (Exclusive Bonus Tracks)</p> <p>AUDIO TRACKS:</p> <p>- Somewhere</p> <p>- Maria</p> <p>MERCHANDISE:</p> <p>- Guitar Man CD</p> <p>Type: CD</p> </p> <p class="product-promo-text"><span class="product-promo-header">FREE US shipping over $100!</span><span class="product-promo-body">Orders within next 2 days will be shipped on Monday</span></p>