Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04e119ea8b4d2b79dcc46055b85fcddf236d27fbdeed1bc2ea03935a3819332d' 
  AND token = '8RfEcQ9EjBFaBKsPCwP0DbWc42ibH9UwJBh6DQkrmvM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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