Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5236ea55b74786077dd716884c48b4518718cd920e6981349d03d552ab21263' 
  AND token = 'wbiYoiWtKUlLily0fOnpwWwa44sK0bg1gYYDQtTOndM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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