Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c01037061428c971849aac7a8913c6e63ab1fc80bcc6cc7bedfdc90b40562e94' 
  AND token = 'oMiVPEyRCZiIfdujnvhFXvycTKOcPy9PUAVYUI2GomM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE								Impossible WHERE noticed after reading const tables