diff --git a/superset/charts/schemas.py b/superset/charts/schemas.py
index 5de166c86..f85ad00a4 100644
--- a/superset/charts/schemas.py
+++ b/superset/charts/schemas.py
@@ -17,7 +17,7 @@
 from typing import Any, Dict
 
 from flask_babel import gettext as _
-from marshmallow import fields, post_load, Schema, validate
+from marshmallow import EXCLUDE, fields, post_load, Schema, validate
 from marshmallow.validate import Length, Range
 
 from superset.common.query_context import QueryContext
@@ -857,6 +857,9 @@ class AnnotationLayerSchema(Schema):
 
 
 class ChartDataQueryObjectSchema(Schema):
+    class Meta:  # pylint: disable=too-few-public-methods
+        unknown = EXCLUDE
+
     annotation_layers = fields.List(
         fields.Nested(AnnotationLayerSchema),
         description="Annotation layers to apply to chart",
diff --git a/tests/query_context_tests.py b/tests/query_context_tests.py
index 5bccf0750..a376fa280 100644
--- a/tests/query_context_tests.py
+++ b/tests/query_context_tests.py
@@ -198,7 +198,7 @@ class TestQueryContext(SupersetTestCase):
 
     def test_sql_injection_via_columns(self):
         """
-        Ensure that calling invalid columns names in columns are caught
+        Ensure that calling invalid column names in columns are caught
         """
         self.login(username="admin")
         table_name = "birth_names"
@@ -213,7 +213,7 @@ class TestQueryContext(SupersetTestCase):
 
     def test_sql_injection_via_metrics(self):
         """
-        Ensure that calling invalid columns names in filters are caught
+        Ensure that calling invalid column names in filters are caught
         """
         self.login(username="admin")
         table_name = "birth_names"
@@ -266,3 +266,22 @@ class TestQueryContext(SupersetTestCase):
         self.assertEqual(len(response), 2)
         self.assertEqual(response["language"], "sql")
         self.assertIn("SELECT", response["query"])
+
+    def test_query_object_unknown_fields(self):
+        """
+        Ensure that query objects with unknown fields don't raise an Exception and
+        have an identical cache key as one without the unknown field
+        """
+        self.maxDiff = None
+        self.login(username="admin")
+        table_name = "birth_names"
+        table = self.get_table_by_name(table_name)
+        payload = get_query_context(table.name, table.id, table.type)
+        query_context = ChartDataQueryContextSchema().load(payload)
+        responses = query_context.get_payload()
+        orig_cache_key = responses["queries"][0]["cache_key"]
+        payload["queries"][0]["foo"] = "bar"
+        query_context = ChartDataQueryContextSchema().load(payload)
+        responses = query_context.get_payload()
+        new_cache_key = responses["queries"][0]["cache_key"]
+        self.assertEqual(orig_cache_key, new_cache_key)