diff --git a/oauth2_provider/migrations/0008_alter_accesstoken_token.py b/oauth2_provider/migrations/0008_alter_accesstoken_token.py
new file mode 100644
index 000000000..5d3a9ebc8
--- /dev/null
+++ b/oauth2_provider/migrations/0008_alter_accesstoken_token.py
@@ -0,0 +1,17 @@
+# Generated by Django 4.2.4 on 2023-09-11 07:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("oauth2_provider", "0007_application_post_logout_redirect_uris"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="accesstoken",
+            name="token",
+            field=models.CharField(db_index=True, max_length=255, unique=True),
+        ),
+    ]
diff --git a/oauth2_provider/models.py b/oauth2_provider/models.py
index d22f7ee82..c1dec99c5 100644
--- a/oauth2_provider/models.py
+++ b/oauth2_provider/models.py
@@ -357,6 +357,7 @@ class AbstractAccessToken(models.Model):
     token = models.CharField(
         max_length=255,
         unique=True,
+        db_index=True,
     )
     id_token = models.OneToOneField(
         oauth2_settings.ID_TOKEN_MODEL,