Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cbb26e77fb031182413df97d23be1834ee4551d9095ea57d18103391a1489c6' 
  AND token = 'h93CMIHX71IGM15mC2JsZySm0WMa1Ax9YCwBxPSORtc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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