> db.users.find({"lastName": "S", "firstName": "w"}).explain()
{
	"queryPlanner" : {
		"plannerVersion" : 1,
		"namespace" : "fetchData.users",
		"indexFilterSet" : false,
		"parsedQuery" : {
			"$and" : [
				{
					"firstName" : {
						"$eq" : "w"
					}
				},
				{
					"lastName" : {
						"$eq" : "S"
					}
				}
			]
		},
		"winningPlan" : {
			"stage" : "FETCH",
			"filter" : {
				"firstName" : {
					"$eq" : "w"
				}
			},
			"inputStage" : {
				"stage" : "IXSCAN",
				"keyPattern" : {
					"lastName" : 1
				},
				"indexName" : "lastName_1",
				"isMultiKey" : false,
				"multiKeyPaths" : {
					"lastName" : [ ]
				},
				"isUnique" : false,
				"isSparse" : false,
				"isPartial" : false,
				"indexVersion" : 2,
				"direction" : "forward",
				"indexBounds" : {
					"lastName" : [
						"[\"S\", \"S\"]"
					]
				}
			}
		},
		"rejectedPlans" : [ ]
	},
	"serverInfo" : {
		"host" : "laptop",
		"port" : 27017,
		"version" : "3.4.1",
		"gitVersion" : "5e103c4f5583e2566a45d740225dc250baacfbd7"
	},
	"ok" : 1
}
>