Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45baeae1c168b1c896e860e1ea17893b98ada1bac23b640bd4ffb346d7428f94' 
  AND token = 'z5ur96LFhg+5uH2x5712QvCIv9miza5X0XM+3lU7fJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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