Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b87becbd8d1f31ab91fb16ad2835547c9f016b16d050fce48b2139e755ccd07' 
  AND token = 'irP6wEAL6qU0/TITGMJ8Ke3NdCH1PFRqK057h30EFAU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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