diff --git a/pkg/sql/plan_opt.go b/pkg/sql/plan_opt.go
index 0f1444428739..661b7b0288a3 100644
--- a/pkg/sql/plan_opt.go
+++ b/pkg/sql/plan_opt.go
@@ -405,6 +405,7 @@ func (opc *optPlanningCtx) buildReusableMemo(ctx context.Context) (_ *memo.Memo,
 		// operators that can be constant folded, then fully optimize it now - it
 		// can be reused without further changes to build the execution tree.
 		if !f.Memo().HasPlaceholders() && !f.FoldingControl().PreventedStableFold() {
+			opc.log(ctx, "optimizing (no placeholders)")
 			if _, err := opc.optimizer.Optimize(); err != nil {
 				return nil, err
 			}
@@ -499,6 +500,8 @@ func (opc *optPlanningCtx) buildExecMemo(ctx context.Context) (_ *memo.Memo, _ e
 		}
 		opc.flags.Set(planFlagOptCacheMiss)
 		opc.log(ctx, "query cache miss")
+	} else {
+		opc.log(ctx, "not using query cache")
 	}
 
 	// We are executing a statement for which there is no reusable memo