Render tokens in hook_node_view
You can use token_replace() for that. As you're using a global token (no context required) it's very simple:

$markup = token_replace('&lt;p&gt;This is my test&lt;/p&gt;&lt;p&gt;[current-page:title]&lt;/p&gt;');
$node-&gt;content['field_mytest']['#markup'] = $markup;