Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '956054527f0427870f243a9d74311aa246f4aea278922872ab7794a50d439068' 
  AND token = 'XuYL5X8rBRNBpWRuQ6kYlURBF2jhOeU3bcQSW6iDjKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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