fix(api-key): use date object for cleanup (#1632)

packages/better-auth/src/plugins/api-key/api-key.test.ts

@@ -23,6 +23,7 @@ describe("api-key", async () => {
 			clientOptions: {
 				plugins: [apiKeyClient()],
 			},
+			testWith: "postgres",
 		},
 	);
 	const { headers, user } = await signInWithTestUser();

packages/better-auth/src/plugins/api-key/routes/index.ts

@@ -64,7 +64,7 @@ export function createApiKeyRoutes({
 					{
 						field: "expiresAt" satisfies keyof ApiKey,
 						operator: "lt",
-						value: new Date().getTime(),
+						value: new Date(),
 					},
 				],
 			});