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 
FROM 
  cscart_product_descriptions 
WHERE 
  cscart_product_descriptions.product_id IN (
    22662, 22615, 6924, 22761, 22663, 22684, 
    22664, 22762, 22849, 23007, 22708, 
    22709, 22710, 22711, 22707, 23529, 
    22763, 22764, 22765, 22766, 22767, 
    22768, 22712, 23363
  ) 
  AND cscart_product_descriptions.lang_code = 'en'

Query time 0.00073

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_product_descriptions",
          "access_type": "range",
          "possible_keys": ["PRIMARY", "product_id"],
          "key": "PRIMARY",
          "key_length": "9",
          "used_key_parts": ["product_id", "lang_code"],
          "rows": 24,
          "filtered": 100,
          "index_condition": "cscart_product_descriptions.product_id in (22662,22615,6924,22761,22663,22684,22664,22762,22849,23007,22708,22709,22710,22711,22707,23529,22763,22764,22765,22766,22767,22768,22712,23363) and cscart_product_descriptions.lang_code = 'en'"
        }
      }
    ]
  }
}

Result

product_id short_description full_description meta_keywords meta_description search_words promo_text
6924 Gel polish Kira Nails №169 Color: peach tulle , enamel Volume: 6 ml
22615
22662
22663
22664
22684
22707
22708
22709
22710
22711
22712
22761
22762
22763
22764
22765
22766
22767
22768
22849
23007
23363
23529