Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '22db5909274dcfb4767ff164ffdc283582e2ae62e498b63fd54f7d1e884a4e64' 
  AND token = 'mt/lxVtmmAp1LiH0qzI9xZRMZbRZoHAREkeR6jigfw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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