diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb
index c565479c1a..9513e035af 100644
--- a/activerecord/lib/active_record/relation/finder_methods.rb
+++ b/activerecord/lib/active_record/relation/finder_methods.rb
@@ -315,6 +315,7 @@ module ActiveRecord
       end
 
       relation = construct_relation_for_exists(conditions)
+      return false if relation.where_clause.contradiction?
 
       skip_query_cache_if_necessary { connection.select_rows(relation.arel, "#{name} Exists?").size == 1 }
     end
diff --git a/activerecord/test/cases/relation_test.rb b/activerecord/test/cases/relation_test.rb
index aec6db961f..ba0d96b68c 100644
--- a/activerecord/test/cases/relation_test.rb
+++ b/activerecord/test/cases/relation_test.rb
@@ -444,6 +444,18 @@ module ActiveRecord
       end
     end
 
+    test "no queries on empty relation exists?" do
+      assert_queries(0) do
+        Post.where(id: []).exists?(123)
+      end
+    end
+
+    test "no queries on empty condition exists?" do
+      assert_queries(0) do
+        Post.all.exists?(id: [])
+      end
+    end
+
     private
       def skip_if_sqlite3_version_includes_quoting_bug
         if sqlite3_version_includes_quoting_bug?