SELECT 
  product_id, 
  feature_short_desc 
FROM 
  cscart_ab__short_desc_from_features_values 
WHERE 
  product_id IN (
    20893, 20894, 20895, 20896, 20897, 20898, 
    20899, 20900, 20901, 20902, 20903, 
    20904, 20905, 20906, 20907, 20908
  ) 
  AND lang_code = 'ru' 
  AND storefront_id = 1

Query time 0.00024

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_ab__short_desc_from_features_values",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "lang_code"],
      "rows": 32,
      "filtered": 100,
      "attached_condition": "cscart_ab__short_desc_from_features_values.storefront_id = 1 and cscart_ab__short_desc_from_features_values.product_id in (20893,20894,20895,20896,20897,20898,20899,20900,20901,20902,20903,20904,20905,20906,20907,20908) and cscart_ab__short_desc_from_features_values.lang_code = 'ru'"
    }
  }
}