UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'pTrZch9o50ioGDyz6089wxQRfGS0H/BvzktVSV2UaE8=' 
WHERE 
  key_id = '8503ff4d48659a55e76aba286fc355f3ea95f6ad03b8a67235582746daec450c' 
  AND (
    token = 'pTrZch9o50ioGDyz6089wxQRfGS0H/BvzktVSV2UaE8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )