I am running below menioned SOQL query in my code- 'select Id, Name,BILLINGSTREET, BILLINGCITY,'+ BILLINGSTATE,BILLINGPOSTALCODE,BILLINGCOUNTRY,CORPORATE_MEMBERSHIP_FORCED_LAPSE_DATE__C,'+ 'SHIPPINGSTREET,SHIPPINGCITY, SHIPPINGSTATE, SHIPPINGPOSTALCODE, SHIPPINGCOUNTRY, PHONE,FAX,'+ 'ACCOUNTSOURCE, Billing_Country_Code__c,Shipping_Country_Code__c,'+ '(Select Id, MD_Head_of_Household__c, Salutation, firstName, LastName, MailingStreet,MailingCity, MailingState, MailingCountry,' + 'MailingPostalCode,Birthdate,Email,HomePhone,MobilePhone from Contacts) ' + 'from Account where Sync__c = false AND Sync_Timestamp__c >=: startDateTime AND IsDeleted = FALSE order by Sync_Timestamp__c,Id ASC limit '+qLimit+' Offset '+qOffset';This is query is working fine is TST sandbox but it is giving SOQL query timeout exception in UAT sandbox.Both sandboxes are Full copy sandboxes and having same data.Any hep/suggestion would be greatly appreciated.