Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61ed1ab1e15601de92b2034c8bda35a4199d6f5276cdd2474b503d3502d3e05b' 
  AND token = 'jH33bBNoWsh/P3CWmCMzvb3GiePH9tvrPKdjzCFMiA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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