UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'UhQbRv3E0JS3QfcYvrKQ51FDcvMxWDiS5PA81wQ6P8A=' 
WHERE 
  key_id = '8c840fc658747a4ce60c8299411d817437393976e96c3081ed726e1954a989f2' 
  AND (
    token = 'UhQbRv3E0JS3QfcYvrKQ51FDcvMxWDiS5PA81wQ6P8A=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )