diff --git a/src/wp-includes/rest-api/search/class-wp-rest-post-search-handler.php b/src/wp-includes/rest-api/search/class-wp-rest-post-search-handler.php
index 0e94f57bda..03f8ff295e 100644
--- a/src/wp-includes/rest-api/search/class-wp-rest-post-search-handler.php
+++ b/src/wp-includes/rest-api/search/class-wp-rest-post-search-handler.php
@@ -58,12 +58,11 @@ class WP_REST_Post_Search_Handler extends WP_REST_Search_Handler {
 		}
 
 		$query_args = array(
-			'post_type'           => $post_types,
-			'post_status'         => 'publish',
-			'paged'               => (int) $request['page'],
-			'posts_per_page'      => (int) $request['per_page'],
-			'ignore_sticky_posts' => true,
-			'fields'              => 'ids',
+			'post_type'              => $post_types,
+			'post_status'            => 'publish',
+			'paged'                  => (int) $request['page'],
+			'posts_per_page'         => (int) $request['per_page'],
+			'ignore_sticky_posts'    => true,
 		);
 
 		if ( ! empty( $request['search'] ) ) {
@@ -83,7 +82,9 @@ class WP_REST_Post_Search_Handler extends WP_REST_Search_Handler {
 		$query_args = apply_filters( 'rest_post_search_query', $query_args, $request );
 
 		$query     = new WP_Query();
-		$found_ids = $query->query( $query_args );
+		$posts     = $query->query( $query_args );
+		// Querying the whole post object will warm the object cache, avoiding an extra query per result.
+		$found_ids = wp_list_pluck( $posts, 'ID' );
 		$total     = $query->found_posts;
 
 		return array(
diff --git a/tests/phpunit/tests/rest-api/rest-search-controller.php b/tests/phpunit/tests/rest-api/rest-search-controller.php
index f6706b18ff..afe0d75758 100644
--- a/tests/phpunit/tests/rest-api/rest-search-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-search-controller.php
@@ -332,6 +332,36 @@ class WP_Test_REST_Search_Controller extends WP_Test_REST_Controller_Testcase {
 		);
 	}
 
+	/**
+	 * @ticket 55674
+	 */
+	public function test_get_items_search_prime_ids() {
+		$action = new MockAction();
+		add_filter( 'query', array( $action, 'filter' ), 10, 2 );
+
+		$query_args = array(
+			'per_page' => 100,
+			'search'   => 'foocontent',
+		);
+		$response   = $this->do_request_with_params( $query_args );
+		$this->assertSame( 200, $response->get_status(), 'Request Status Response is not 200.' );
+
+		$ids = wp_list_pluck( $response->get_data(), 'id' );
+		$this->assertSameSets( self::$my_content_post_ids, $ids, 'Query result posts ids do not match with expected ones.' );
+
+		$args               = $action->get_args();
+		$primed_query_found = false;
+		foreach ( $args as $arg ) {
+			// Primed query will use WHERE ID IN clause.
+			if ( str_contains( $arg[0], 'WHERE ID IN (' . implode( ',', $ids ) ) ) {
+				$primed_query_found = true;
+				break;
+			}
+		}
+
+		$this->assertTrue( $primed_query_found, 'Prime query was not executed.' );
+	}
+
 	/**
 	 * Test retrieving a single item isn't possible.
 	 */