Added updated_at index to pages table

This has a large impact on some areas where latest updated pages are
shown, such as the homepage for example.

database/migrations/2023_02_23_200227_add_updated_at_index_to_pages.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('pages', function (Blueprint $table) {
+            $table->index('updated_at', 'pages_updated_at_index');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('pages', function (Blueprint $table) {
+            $table->dropIndex('pages_updated_at_index');
+        });
+    }
+};