Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d56d33e0bb3b8835887ab0da209140fb740c53186cefe2b92e70c717cfc8c8e' 
  AND token = 'ewl/7qyAr/WHGkKpEj/8bchK5V/X0QADKB26JhO8ed4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}