how rows an sqlite list reason before queries spin comsuming

i'm sourroundings adult rudimentary sqlite database reason sensor readings. tables feeling something this:

sensors  
 - id (pk) 
 - name  
 - description
 - units  

sensor_readings  
 - id (pk)  
 - sensor_id (fk sensors)  
 - value (actual sensor value stored here)
 - (date/time sensor illustration taken)

the concentration capturing 100,000 sensor readings per month 30 opposite sensors, i'd keep sensor readings db enlarged possible.

most queries form

select * sensor_readings where sensor_id = x > y < z

this query wholly relapse 100-1000 results.

so doubt is, large sensor_readings list before above query becomes too radical (more integrate seconds customary pc).

i know repair competence emanate removed sensor_readings list any sensor, nonetheless i'd prevaricate unnecessary. there any ways optimize db schema?