UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nHkgMckKD4UBVuYlm9B71kqpWh9f2uRd/k7L621oHcM=' 
WHERE 
  key_id = '83f981c052eb9bae6312f757ad7889ab32f510a19ad05ab28b4bd657a5add2b4' 
  AND (
    token = 'nHkgMckKD4UBVuYlm9B71kqpWh9f2uRd/k7L621oHcM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )