UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6MuElzx3igzi/xxqsou52qGoCw0GpUm6ztRUxz0HwQU=' 
WHERE 
  key_id = '12c4ddb2f40841c959d36b8208349d63cf251ee671fad7b825dede0c98c8536f' 
  AND (
    token = '6MuElzx3igzi/xxqsou52qGoCw0GpUm6ztRUxz0HwQU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )