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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, 
    51169, 51168, 51167, 51166, 90, 51171, 
    51170, 51176, 51174, 51173, 51172, 
    91, 51182, 51180, 51179, 51178, 51177, 
    93, 51183, 20, 51188, 51187, 51186, 
    51185, 51184, 51194, 51193, 51192, 
    51191, 51190, 51189, 19, 51201, 51200, 
    51199, 51198, 51197, 51196, 51195, 
    131, 51564, 51568, 51569, 51570, 51571, 
    51572, 51573, 51566, 51578, 51579, 
    51580, 51581
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00049

JSON explain

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