Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1c0628c035758eeab8e5e3683108aa34094c78cd1769b285c49f65d5f7099fe' 
  AND token = 'YfIocdcq1dsUHZ6tQ3H+EJmxEQISaP0dbAAG9wcgYDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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