Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8801453fba8127657521b7ed93ae9b39890043e0b42fea461f2b00eab6b87e1' 
  AND token = 'AdAJ4JhSGqzZO8uXjEhzRpMIB3nSMLRtHqMfwy2ysp4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

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