Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71f816a6e7706c27d07a0153e44ba790e8f7370089a1344a33b2dcffa72d73b6' 
  AND token = '/BVBSXnvWFVZCemEGRTBz7/dHeUA8FzG2A5K9s+WtD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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