[12.x] Update jobs/cache migrations (#6736)

* Update 0001_01_01_000001_create_cache_table.php

* Update 0001_01_01_000002_create_jobs_table.php

* Update 0001_01_01_000002_create_jobs_table.php

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

database/migrations/0001_01_01_000001_create_cache_table.php

@@ -14,13 +14,13 @@ return new class extends Migration
         Schema::create('cache', function (Blueprint $table) {
             $table->string('key')->primary();
             $table->mediumText('value');
-            $table->integer('expiration');
+            $table->integer('expiration')->index();
         });
 
         Schema::create('cache_locks', function (Blueprint $table) {
             $table->string('key')->primary();
             $table->string('owner');
-            $table->integer('expiration');
+            $table->integer('expiration')->index();
         });
     }