Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81e3a705c5dc5f3be63c5b29a7abc18de1bfaf14564f82c0f513984dfbc506f0' 
  AND token = 'OswE4jgqcjVv5oghuOX00V3OHROFiquIBTmsGLvH4sw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

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