UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MD5nShEFSWA45lbIdAZg59R7NznYYSoThxvYWKWL5zM=' 
WHERE 
  key_id = '6255085b69e16aad64e4e49b541f41b4abc86f937b756d73c710cffcb60f4963' 
  AND (
    token = 'MD5nShEFSWA45lbIdAZg59R7NznYYSoThxvYWKWL5zM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )