### 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boolean property, as well as the `expiration` property that contains the UNIX timestamp past of which the key is no longer valid for authentication.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
+ "] or higher to support restrictions for API keys"
            )
        );
        final BulkUpdateApiKeyRequest updateRequest = new BulkUpdateApiKeyRequest(
            randomList(1, 3, () -> randomAlphaOfLengthBetween(3, 5)),
            roleDescriptorsWithWorkflowsRestriction,
            Map.of()
        );
        final PlainActionFuture<BulkUpdateApiKeyResponse> updateFuture = new PlainActionFuture<>();
        service.updateApiKeys(authentication, updateRequest, Set.of(), updateFuture);
        final IllegalArgumentException e2 = expectThrows(IllegalArgumentException.class, createFuture::actionGet);
        assertThat(
            e2.getMessage(),
            containsString(
                "all nodes must have transport version ["
                    + WORKFLOWS_RESTRICTION_VERSION
                    + "] or higher to support restrictions for API keys"
            )
        );
    }
    public void testValidateOwnerUserRoleDescriptorsWithWorkflowsRestriction() {
        final Authentication authentication = AuthenticationTestHelper.builder().build();
        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(),