I have followed below article for configuring azure aad token lifetime to 10mins
How can I configure the expiration time of an Azure AD access token (using ADAL)?
I have used command below for assigning policy to app
Add-AzureADApplicationPolicy -Id <ObjectId of the AAD Application> -RefObjectId <ObjectId of the Policy>
Policy created but not reflected on new tokens created. Token expiry still showing as 1 hour for new tokens.