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 (137) 
  AND cscart_product_descriptions.lang_code = 'tr'

Query time 0.00025

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
137 <p> <p>he ULTIMATE heroes from Marvel and Capcom collide again in Ultimate Marvel vs. Capcom 3. Every epic character from the original blockbuster returns to the fray alongside 12 new fighters,&nbsp;</p> <p>8 over-the-top new stages and enhanced gameplay.</p> <p>COMING SOON: Ultimate Marvel Vs. Capcom 3 for PlayStation&reg;Vita system! It's the full console experience packed with 50 legendary characters*, local and Wi-Fi multiplayer, touch panel controls, and exclusive new features.</p> <p>UNLEASH YOUR ULTIMATE</p> <p>ANYTIME, ANYWHERE</p> <p>LAUNCHING with the PlayStation&reg;Vita system on 2/22/12&nbsp;</p> <p>OUT NOW on Xbox 360 and PlayStation&reg;3 system</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>