UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'd8gxFcIiap7tUaNC9eydjijV6bNSx1cX/GzdVKx1n2E=' 
WHERE 
  key_id = '1f3de397fcfba54318673c091be45f25064948eba59880d5ba22475982f710c3' 
  AND (
    token = 'd8gxFcIiap7tUaNC9eydjijV6bNSx1cX/GzdVKx1n2E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )