HTTP Post to login to a website with timestamp, token, username and password

From a script I want to login to a website. For that I searched the source for the POST request. The post request to login the website has the data "useame", "passwort", "timestamp" and "token". However when I copy the timestamp and token and paste the post request to my browsers address bar with my useame and password like this:

https://example.com/action/login?__elgg_token=905adbf0c0111fef78a8344c38c8f2a8&__elgg_ts=1461577445&useame=foo&password=bar

the login is unsuccessful. Do I need a different token and timestamp?

This is from the source:

action="https://example.com/action/login" method="post" > 

<input type="hidden"  name="__elgg_token"  value="905adbf0c0111fef78a8344c38c8f2a8" />

<input type="hidden"  name="__elgg_ts"  value="1461577445" />

<input type="text"   name="useame"  value="" class="form-control login-textarea form-control" />

<input type="password"   name="password"  value="" class="form-control login-textarea" />