### Description

The [Get API key information API](https://www.elastic.co/guide/en/elasticsearch/reference/master/security-api-get-api-key.html) can currently filter the returned keys by:
 * key id/name
 * keys owned by the calling user
 * keys owned by other users, by `realm_name` and `username`

Irrespective of the filtering used, both invalidated and expired (but not yet deleted) keys will be included in the response.
In the response, keys have the `invalidated` boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.

I propose we introduce a way for the API to support retrieving:
* only valid API keys (not return invalidated keys) - using a boolean request parameter
* keys not expired before a certain timestamp - using a timestamp parameter that defaults to "now" - also note that keys' experiation date is always checked against the local node's clock
x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/ApiKeyServiceTests.java
assertThat(
            ApiKeyService.buildDelimitedStringWithLimit(limit, "id-1", "id-2", "id-3"),
            equalTo("id-1, id-2... (3 in total, 1 omitted)")
        );
        assertThat(
            ApiKeyService.buildDelimitedStringWithLimit(limit, "id-1", "id-2", "id-3", "id-4"),
            equalTo("id-1, id-2... (4 in total, 2 omitted)")
        );
        var e = expectThrows(
            IllegalArgumentException.class,
            () -> ApiKeyService.buildDelimitedStringWithLimit(randomIntBetween(-5, 0), "not-relevant-for-this-test")
        );
        assertThat(e.getMessage(), equalTo("limit must be positive number"));
    }
    public void testCreateCrossClusterApiKeyMinVersionConstraint() {
        final Authentication authentication = randomValueOtherThanMany(
            Authentication::isApiKey,
            () -> AuthenticationTestHelper.builder().build()
        );
        final AbstractCreateApiKeyRequest request = mock(AbstractCreateApiKeyRequest.class);
        when(request.getType()).thenReturn(ApiKey.Type.CROSS_CLUSTER);
        final ClusterService clusterService = mock(ClusterService.class);
        when(clusterService.getClusterSettings()).thenReturn(
            new ClusterSettings(Settings.EMPTY, Set.of(ApiKeyService.DELETE_RETENTION_PERIOD))
        );
        final ClusterState clusterState = mock(ClusterState.class);
        when(clusterService.state()).thenReturn(clusterState);
        final TransportVersion minTransportVersion = TransportVersionUtils.randomVersionBetween(
            random(),
            TransportVersion.MINIMUM_COMPATIBLE,