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SELECT 
  cscart_ult_product_descriptions.product_id, 
  cscart_ult_product_descriptions.short_description, 
  IF(
    cscart_ult_product_descriptions.short_description = "", 
    cscart_ult_product_descriptions.full_description, 
    ""
  ) AS full_description, 
  cscart_ult_product_descriptions.meta_keywords, 
  cscart_ult_product_descriptions.meta_description, 
  cscart_ult_product_descriptions.search_words, 
  cscart_ult_product_descriptions.promo_text 
FROM 
  cscart_ult_product_descriptions 
WHERE 
  cscart_ult_product_descriptions.product_id IN (
    51165, 51164, 51163, 51162, 51161, 52, 
    51194, 51193, 51192, 51191, 51190, 
    51189, 19, 51201, 51200, 51199, 51198, 
    51197, 51196, 51195, 131, 111, 51212, 
    144, 51215, 51214, 51213, 51444, 51445, 
    51446, 51447, 51220, 51219, 51218, 
    51217, 51216, 146, 51448, 51449, 51231, 
    51230, 51229, 51228, 51227, 51226, 
    51225, 109, 51272, 51271, 51270, 51269, 
    51268, 51267, 51266, 145, 9, 59, 13, 
    51346, 118, 51347, 85, 61, 15, 95
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}