UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'AC6DX9ROKq+2rDdp728HYqdaTcCacw9RMfOWoaU+KCE=' 
WHERE 
  key_id = '6794847f619eb2e1e99da91d1f244c53b8d409ca6dd21dd68584546b3d547812' 
  AND (
    token = 'AC6DX9ROKq+2rDdp728HYqdaTcCacw9RMfOWoaU+KCE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )