Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3aea64f8d5136233f63c84f2b70c279cc6a3de591802921aeec3403055a38fcf' 
  AND token = 'eK3b+OamoT7YDT1D+6uQVWxxyoFxKHH1R/Z2QF+pz5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}