UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nW2tMVMfJW0JhAP0AcmQ/lP2DlTYqnipzUqm0Y8v+Cg=' 
WHERE 
  key_id = '81c41b2a9db5dd27f87055eb24722335db99a85ff82310305f026f5e232ce370' 
  AND (
    token = 'nW2tMVMfJW0JhAP0AcmQ/lP2DlTYqnipzUqm0Y8v+Cg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )