Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bd6a7a46c61b59390bc9c228bca058a53939c228242d421875cd1692356a34b' 
  AND token = '+suqJIFefOMOh2H3x23hwH7RQXM7lLOS39FFnFf6Jao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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