Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4077a2f7000a13172cbc53835a8e43cf8481e2710171f6a588079fd505bd3d6b' 
  AND token = 'LMn5t3cL961NI4t31p7TcnE4cYmXVTNNB/duekNFe1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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