Change schema version of a module

For Drupal8+:
Manually setting the current schema version of a module

drush eval "\Drupal::service('update.update_hook_registry')->setInstalledVersion('my_module', 9001);"

Or in this way:

\Drupal::keyValue('system.schema')->set('my_module', (int) 9001);

For Drupal 7:

drush ev "drupal_set_installed_schema_version('my_module', 7025)"

To get installed version for Drupal8+:

drush eval "print \Drupal::service('update.update_hook_registry')->getInstalledVersion('my_module');"