UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'c6k4pBtB/4N0Rks0zAF1wKOsdu7M2caKkXtT+/sGltk=' 
WHERE 
  key_id = '31f739d2719be81bf444ed35f9357275247a61f2131a07d499fa5e9a693e3b4c' 
  AND (
    token = 'c6k4pBtB/4N0Rks0zAF1wKOsdu7M2caKkXtT+/sGltk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )