UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'mQeZZOMXaaf6Q1gcGdyqK9Gea42WbsMFSNYEBnGmTko=' 
WHERE 
  key_id = '2481dc6d34a179582f6c97aeafea96d46167f964c416051656f5de3e70924369' 
  AND (
    token = 'mQeZZOMXaaf6Q1gcGdyqK9Gea42WbsMFSNYEBnGmTko=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )