Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '094eaa7077acd0b25d6ef244b989683076bacfbc27511628f435239fc180e286' 
  AND token = 'yLlc5gmK68tL8gnyiNtsTcjZSnXxPgJTwV6j34HTouE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

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