Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '715e4a768e092f098e38e89c4003ee7c7e976f9ba5e280f5e8e36e6a403673d2' 
  AND token = 'ZdacpyfDwWc0ZgHTKlk4ZWAOwi7RINepX+Rc1P6dBgI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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