UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'xhDTlMAzYnSNZMlGad5x4DVRxCT3bp+jFOBbdutQlps=' 
WHERE 
  key_id = '3d73cf4c0a257fa24026a7b8c1d6e8096a36ba4fd1d2f9d3e8b31b1b0bd2e351' 
  AND (
    token = 'xhDTlMAzYnSNZMlGad5x4DVRxCT3bp+jFOBbdutQlps=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )