Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '068117efdf7e68423bbd73d1a648e3970fcb8dffc565517e1cf1a15ac93904b9' 
  AND token = 'Av4ae3FcwJxslOJlO6Zp610A1Q+GU2UszHu9SFs5gD4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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