UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'CW9HgZWVTYbt0NWImerqF81yfDlGKO38RA5uRD5JCX4=' 
WHERE 
  key_id = '51e705174048adf70d89b779630e17afa6bd3a65b0714326073dbb79abd899eb' 
  AND (
    token = 'CW9HgZWVTYbt0NWImerqF81yfDlGKO38RA5uRD5JCX4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )