Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acad375c8bebbe2928a04d3f6710ddcdcc26ef8370da39373f026318953203ea' 
  AND token = 'xTdaIp0Jf/aknE3LUlcXEhyK3g5kDVvJ1vMIXho1X4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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