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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 (
    10808, 10809, 10810, 10811, 10812, 10827, 
    10828, 9839, 12702, 9841, 9848, 9840, 
    9844, 9843, 9846, 9845, 9860, 9859, 
    9858, 9857, 9852, 9861, 9862, 9847, 
    9863, 9856, 9855, 9838, 9849, 9850, 
    9853, 9842, 9851, 9854, 10263, 10264, 
    10265, 10266, 10267, 10268, 10269, 
    10270, 10271, 10272, 10273, 10478, 
    9883, 9901, 10493, 10485, 10476, 10479, 
    10494, 10492, 10468, 9903, 10487, 9899, 
    10473, 10486, 9881, 9896, 9892, 10481
  ) 
  AND cscart_ult_product_descriptions.company_id = 1 
  AND cscart_ult_product_descriptions.lang_code = 'ru'

Query time 0.00035

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}