Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '115fe79bdf02816cacdb0973905c8b2f3b2d5942d404f863cea62bc9a46f0fe7' 
  AND token = 'idbkcymUbTEp6tUXa4kofHQCCE7MZK3bgmccBunqsVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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