How to handle table access quickly in case it have huge amount of data ?

CREATE TABLE [Parts].[Nop_Part](
	[PartID] [int] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,
	[PartNumber] [nvarchar](70) NOT NULL,
	[PartNumberNon] [nvarchar](60) NOT NULL,
	[CompanyID] [int] NOT NULL,
	[Active] [bit] NOT NULL,
	[Deleted] [bit] NOT NULL,
	[PartsFamilyID] [int] NOT NULL,
	[PackageID] [int] NULL,
	[PinOutId] [int] NOT NULL,
	[GroupID] [bigint] NULL,
	[Equation] [varchar](500) NULL,
	[Masked_ID] [int] NULL,
	[CreatedDate] [datetime] NULL,
	[CreatedBy] [int] NULL,
	[ModifiedDate] [datetime] NULL,
	[Modifiedby] [int] NULL,
	[DeletedDate] [datetime] NULL,
	[DeletedBy] [int] NULL,
	[LatestCompanyID] [bigint] NOT NULL,
	[DateOfLatestCompanyID] [datetime] NULL,
 CONSTRAINT [PK_Nop_Part] PRIMARY KEY CLUSTERED 
(
	[PartID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
 CONSTRAINT [UC_Partnon_LatestCompanyID] UNIQUE NONCLUSTERED 
(
	[PartNumberNon] ASC,
	[LatestCompanyID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
 CONSTRAINT [uc_partnumbernonCompany] UNIQUE NONCLUSTERED 
(
	[PartNumberNon] ASC,
	[CompanyID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

ALTER TABLE [Parts].[Nop_Part] ADD  CONSTRAINT [DF_Nop_Part_PinOutId]  DEFAULT ((0)) FOR [PinOutId]
GO

ALTER TABLE [Parts].[Nop_Part] ADD  DEFAULT (getdate()) FOR [DateOfLatestCompanyID]
GO

ALTER TABLE [Parts].[Nop_Part]  WITH NOCHECK ADD FOREIGN KEY([Masked_ID])
REFERENCES [dbo].[Core_Masked] ([ID])
GO