Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '402c8129363ec23ad8369039436a6822483a2eb5f5eb41a07532e384affacdc9' 
  AND token = 'kQ6Jkaev0RxwPyrz5O5wDH8g0L93byyYuJu4rEvAW1Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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