diff --git a/src/exchangedb/0002-work_shards.sql b/src/exchangedb/0002-work_shards.sql
index 016207d37..220745d43 100644
--- a/src/exchangedb/0002-work_shards.sql
+++ b/src/exchangedb/0002-work_shards.sql
@@ -49,3 +49,8 @@ CREATE INDEX work_shards_by_end_row_index
   ON work_shards
   (end_row DESC);
 
+CREATE INDEX work_shards_by_rows
+  ON work_shards
+  (job_name
+  ,start_row
+  ,end_row);