Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9545fc78df22fe2fc4c7ae452e71222743c5bf797a6a93eea0813d6d90c4901f' 
  AND token = 'h80LvsEVH63FKGs2YEEVjk7R4wpuOzThu8c8R1+ImeM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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