diff --git a/packages/db/migrations/0030_messaging.sql b/packages/db/migrations/0030_messaging.sql
index dbf1b61..c404505 100644
--- a/packages/db/migrations/0030_messaging.sql
+++ b/packages/db/migrations/0030_messaging.sql
@@ -23,7 +23,7 @@ CREATE TABLE "conversations" (
   "updated_at" timestamp NOT NULL DEFAULT now()
 );
 
-CREATE INDEX "idx_conversations_business_id_last_message_at" ON "conversations"("business_id", "last_message_at");
+CREATE INDEX "idx_conversations_business_id_last_message_at" ON "conversations"("business_id", "last_message_at" DESC);
 CREATE UNIQUE INDEX "uq_conversations_business_client_number" ON "conversations"("business_id", "client_id", "business_number");
 
 CREATE TABLE "messages" (
@@ -41,7 +41,7 @@ CREATE TABLE "messages" (
   "read_by_client_at" timestamp
 );
 
-CREATE INDEX "idx_messages_conversation_id_created_at" ON "messages"("conversation_id", "created_at");
+CREATE INDEX "idx_messages_conversation_id_created_at" ON "messages"("conversation_id", "created_at" DESC);
 CREATE UNIQUE INDEX "uq_messages_provider_message_id" ON "messages"("provider_message_id");
 
 CREATE TABLE "message_attachments" (
diff --git a/packages/db/migrations/meta/_journal.json b/packages/db/migrations/meta/_journal.json
index 43f81e7..eef2244 100644
--- a/packages/db/migrations/meta/_journal.json
+++ b/packages/db/migrations/meta/_journal.json
@@ -198,9 +198,23 @@
       "tag": "0027_refunds",
       "breakpoints": true
     },
+    {
+      "idx": 28,
+      "version": "7",
+      "when": 1775741667192,
+      "tag": "0028_sms_reminders",
+      "breakpoints": true
+    },
     {
       "idx": 29,
       "version": "7",
+      "when": 1775784467192,
+      "tag": "0029_db_indexes_constraints",
+      "breakpoints": true
+    },
+    {
+      "idx": 30,
+      "version": "7",
       "when": 1775828067192,
       "tag": "0030_messaging",
       "breakpoints": true
diff --git a/packages/db/src/schema.ts b/packages/db/src/schema.ts
index 165eac8..f1d74b3 100644
--- a/packages/db/src/schema.ts
+++ b/packages/db/src/schema.ts
@@ -448,7 +448,7 @@ export const conversations = pgTable(
   (t) => [
     index("idx_conversations_business_id_last_message_at").on(
       t.businessId,
-      t.lastMessageAt
+      t.lastMessageAt.desc()
     ),
     unique("uq_conversations_business_client_number").on(
       t.businessId,
@@ -479,7 +479,10 @@ export const messages = pgTable(
     readByClientAt: timestamp("read_by_client_at"),
   },
   (t) => [
-    index("idx_messages_conversation_id_created_at").on(t.conversationId, t.createdAt),
+    index("idx_messages_conversation_id_created_at").on(
+      t.conversationId,
+      t.createdAt.desc()
+    ),
     unique("uq_messages_provider_message_id").on(t.providerMessageId),
   ]
 );