UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'mrM5eDoa5TlGvtgiB1RPDaEzt+/Q2N1YfUsVtA0DfOg=' 
WHERE 
  key_id = '38a4fcbabe43510f6fc9bb7ca09ab704a11d664a65402d68ebb714b80ed9535b' 
  AND (
    token = 'mrM5eDoa5TlGvtgiB1RPDaEzt+/Q2N1YfUsVtA0DfOg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )