Revise wo_ap_et_access_token_for_user

[mrwpress]

function wo_ap_et_access_token_for_user() {
global $wpdb;

$current_user = get_current_user_id();
$check        = $wpdb->get_row( "SELECT * FROM {$wpdb->prefix}oauth_access_tokens WHERE user_id ={$current_user}" );

return $check;

}

Needs to be:

function wo_ap_et_access_token_for_user() {
global $wpdb;

$current_user = get_current_user_id();
$query        = "SELECT * FROM {$wpdb->prefix}oauth_access_tokens WHERE user_id = %d";
$query        = $wpdb->prepare( $query, $current_user );
return $wpdb->get_row( $query );

}

NOTE: The prepare() method of $wpdb ensures security of the query.

https://developer.wordpress.org/reference/classes/wpdb/prepare/