UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'FgYMYxweiI00l3qnn66pU0/ycP9hUtUqJHIPCKCh/DU=' 
WHERE 
  key_id = '44d79afed25ab626055a42646a83983bc1df9ed8d261d2254a6e32d71349e516' 
  AND (
    token = 'FgYMYxweiI00l3qnn66pU0/ycP9hUtUqJHIPCKCh/DU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )