Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7efd84f884d518ad6514478b2005ad86c2b761e157dc66dd97332385ff7f4acf' 
  AND token = 'vwmsVOhd4XnTonPi+GaiRQ3q06v1mpnimQJHV1V4Crg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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