title: How to set expiration time of PhoneNumberTokenProvider in Microsoft.AspNet.Identity
body: <p>I am working on an Project in which I need to validate user phone number by SMS. </p>
  
  <p>I am using <code>AspNet.Identity.PhoneNumberTokenProvider</code> for the same. I want to set expiration time of the generated <code>PhoneNumberToken</code> . </p>
  
  <p>How can I achieve this?</p>