How to mod rewrite a secondary domain pointed to 1 IP to a specific file with query string?

I have 2 domains:

1. example-1.com points to 12.34.56
2. example-2.com also points 12.34.56

Both domains have the same DocumentRoot setup in VirtualHost:

First looks like:

<VirtualHost *:80>
    DocumentRoot /var/www/example-1
    ServerName www.example-1.com
    ServerAlias example-1.com
</VirtualHost>

Second looks like:

<VirtualHost *:80>
    DocumentRoot /var/www/example-1
    ServerName www.example-2.com
    ServerAlias example-2.com
</VirtualHost>

However, I want the second domain to redirect to a specific file with a special query to display different content. On my local host I have been able to get this setup to work, but I have been unsuccessful at mimicking this on my remote DO Ubuntu server.

I’m currently rewriting using mod rewrite conditioning. This is my local setup:

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{HTTP_HOST} ^example-2.com
  RewriteRule ^$ page.php?foo=bar[QSA]
</IfModule>

The first domain, example-1.com by default will showcase page.php content without any mod rewrite rules or query needed as I have designed it to do so. The second domain, example-2.com on the other hand will need to show specific content different from what example-1.com shows. Again, this all works locally for me, but when I imitate this all on the remote server I get no dice. Any help would be greatly appreciated, thanks!