Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '105048be736e3723fbd3ac389e276529334199f7b3b1361a1ae966dce841c4f0' 
  AND token = '4cD0ucgs/jGpVn7a9idBI5SGGZ0flLl43Hn2jb9Cf+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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