SELECT 
  product_id, 
  feature_short_desc 
FROM 
  cscart_ab__short_desc_from_features_values 
WHERE 
  product_id IN (
    20093, 20094, 20095, 20096, 20097, 20098, 
    20099, 20100, 20101, 20102, 20103, 
    20104, 20105, 20106, 20107, 20108
  ) 
  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 (20093,20094,20095,20096,20097,20098,20099,20100,20101,20102,20103,20104,20105,20106,20107,20108) and cscart_ab__short_desc_from_features_values.lang_code = 'en'"
    }
  }
}