UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'C50ekNaWdetAD5EQZE7Rnje+JJHgJGHelBt+STnLB/w=' 
WHERE 
  key_id = '20136d3d84877c55ea5fea60940ebf402836a5c4a9a239d3f64dfc8c99369c54' 
  AND (
    token = 'C50ekNaWdetAD5EQZE7Rnje+JJHgJGHelBt+STnLB/w=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )