Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9958961b821d66c69cb269562e147ecb9142798cc856e9582bb616ad20950ec5' 
  AND token = 'F2ukBj7uialG9l2BDTCOwLnIJT8HthBgHSpKvyVoC+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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