SELECT 
  product_id, 
  feature_short_desc 
FROM 
  cscart_ab__short_desc_from_features_values 
WHERE 
  product_id IN (
    8760, 8764, 8766, 8767, 8771, 8773, 8774, 
    8775, 8776, 8782, 8783, 8784, 8786, 
    8787, 8788, 8789
  ) 
  AND lang_code = 'ru' 
  AND storefront_id = 1

Query time 0.00025

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 (8760,8764,8766,8767,8771,8773,8774,8775,8776,8782,8783,8784,8786,8787,8788,8789) and cscart_ab__short_desc_from_features_values.lang_code = 'ru'"
    }
  }
}