Express.js with Azure Managed Identity not able to refresh access token after it expires

I have an Express.js app that connects to the Azure MYSQL DB using Managed Identity. The server.js file imports and calls the setupConnectionPool function, successfully gets access token and connects to the DB. However, after 24 hours the token expires, and none of my solutions to refresh the token have worked so far.

I tried doing setInterval and setTimeout to re-call the setupConnectionPool at the time of expiration, also tried if(accessToken.expiresOnTimestamp < Date.now()), but no success. Last piece of a client project I need resolved, appreciate any ideas!

const mssql = require('mssql');
require('dotenv').config();
const { DefaultAzureCredential } = require("@azure/identity");

async function setupConnectionPool() {
    try {
      console.log(process.env.AZURE_DEV_MI_CLIENT_ID)
      const credential = new DefaultAzureCredential({
        managedIdentityClientId: process.env.AZURE_DEV_MI_CLIENT_ID,
      });
      console.log('credentialll', credential)
      let accessToken = await credential.getToken("https://database.windows.net/.default");
      console.log('access token', accessToken)

      const refreshTime = accessToken.expiresOnTimestamp - Date.now();
      console.log('refreshTime', refreshTime)
      const refreshToken = async () => {
        if(pool) {
          console.log('close pool')
          await pool.close();
        }
        console.log('refresh token func call')
        try {
          console.log('try setupconnectionpool')
          await setupConnectionPool();
        } catch(e) {
          console.log('catch e', e)
        }
      }

      setTimeout(() => {
        console.log('Get refresh token - 10000');
        refreshToken();
      }, (refreshTime - 10000))

      const config = {
        user: "",
        password: "",
        server: process.env.DB_SERVER,
        authentication: {
          type: "azure-active-directory-access-token",
          options: {
            token: accessToken.token,
          },
        },
        options: {
          database: process.env.DB_NAME,
          encrypt: true,
          port: 1433,
        },
      };
      const pool = new mssql.ConnectionPool(config);
      await pool.connect();
      console.log('pool', pool);
      return pool;
    } catch (error) {
      console.error("Error setting up connection pool:", error);
      throw error;
    }
}

module.exports = { setupConnectionPool }