SELECT 
  vs.values_set_id, 
  vs.name 
FROM 
  cscart_category_filter_values_sets AS vs 
WHERE 
  1 
  AND vs.values_set_id IN (14) 
ORDER BY 
  vs.values_set_id ASC

Query time 0.00115

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "vs",
      "access_type": "const",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "4",
      "used_key_parts": ["values_set_id"],
      "ref": ["const"],
      "rows": 1,
      "filtered": 100
    }
  }
}