Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '292a4030ef7013a252eb0a94befbc3af4d3308e30713ffcf0e7b207c0aa0430b' 
  AND token = 'DYvSfj6hVgLjKye7hTi58qICqqN1OxyOv9KdNisK11c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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