Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '68afb24348f4ab5af0db47bb499b60ad3942995935ceffff01bd11a3697f0603' 
  AND token = 'fsDBSrSz4fctHj+jDppDk3HO3nCWgl/ZDlF7JMjUW9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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