Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6411cfd5a3d686a9705b88375ca169e0140e27493aecced88977e5aa40f80964' 
  AND token = 'lIIfSYUFej6+IntcH6sBMuLbdj8/kgoWota6fu78oUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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