Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32129220647017901eef474b18970733be16411e120b66c31182cdc8c6c0590d' 
  AND token = 'tjsgYp5Bm/ctQ8mxdGN5ukT/u/VnD5j8Zf3pkpVNQzQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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