SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b6aa4f80477e0bd3c3f6afa6afac2f69af919ebeb24f56527c2ed6dcd4c3163' 
  AND token = 'wp//ieVaFUFRz3Rb1Xdzp0L+OXHl6xnpqpwm+ICqykM=' 
  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