SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '601496ae6205c486eadad0bf9ffd31f9f2944361382c8d6218214775ac336299' 
  AND token = 'QDrRPpQMDr2NO/IqfvLEgebYQVBwoG7t1N9Gmdn5Am0=' 
  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