Add indices to Check model

Server/db/models/Check.js

@@ -67,5 +67,8 @@ const BaseCheckSchema = mongoose.Schema({
  */
 const CheckSchema = mongoose.Schema({ ...BaseCheckSchema.obj }, { timestamps: true });
 CheckSchema.index({ createdAt: 1 });
+CheckSchema.index({ monitorId: 1, createdAt: 1 });
+CheckSchema.index({ monitorId: 1, createdAt: -1 });
+
 export default mongoose.model("Check", CheckSchema);
 export { BaseCheckSchema };