SELECT 
  product_id, 
  feature_short_desc 
FROM 
  cscart_ab__short_desc_from_features_values 
WHERE 
  product_id IN (
    19949, 19950, 19951, 19952, 19953, 19954, 
    19955, 19956, 19957, 19958, 19959, 
    19960, 19961, 19962, 19963, 19964
  ) 
  AND lang_code = 'en' 
  AND storefront_id = 1

Query time 0.00022

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 (19949,19950,19951,19952,19953,19954,19955,19956,19957,19958,19959,19960,19961,19962,19963,19964) and cscart_ab__short_desc_from_features_values.lang_code = 'en'"
    }
  }
}