SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94645f822f89fcf9ad39b2b6511d8652012017f6b6912a05558702dad8237d24' 
  AND token = 'a19OEVVmw3Bdoppy9nj4/JKY/cJ9Xzwtk/ryjq6xg/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

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