SELECT 
  product_id, 
  feature_short_desc 
FROM 
  cscart_ab__short_desc_from_features_values 
WHERE 
  product_id IN (
    19869, 19870, 19871, 19872, 19873, 19874, 
    19875, 19876, 19877, 19878, 19879, 
    19880, 19881, 19882, 19883, 19884
  ) 
  AND lang_code = 'en' 
  AND storefront_id = 1

Query time 0.00028

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": 16,
      "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 (19869,19870,19871,19872,19873,19874,19875,19876,19877,19878,19879,19880,19881,19882,19883,19884) and cscart_ab__short_desc_from_features_values.lang_code = 'en'"
    }
  }
}