You can easily find out in two ways whether rewrite_module configured in your server.

Login to your server through ssh and execute below command,

# httpd -M | grep rewrite_module

Syntax OK
rewrite_module (static)

Another method is to check if mod_rewrite is enabled by PHP code,

Make a file and add the below code, it will be displaying configured apache modules on a page,

phpinfo.php
<?php
$test=print_r(shell_exec('/usr/local/apache/bin/httpd -l'), 'mod_rewrite');
echo '<pre> - ';print_r($test);echo '</pre>';
?>

You will be getting an output:
 
Compiled in modules:
  core.c
  mod_authn_file.c
  mod_authn_default.c
...
  mod_alias.c
  mod_rewrite.c
  mod_so.c