Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0b8120986b141e24239adf36d57e7d56f5ea5e0d952bf95cfecebf0eb26080d' 
  AND token = 'LV9ZtypCEUauycS0BovGEefVDYWUuS2/VRPxhJweBww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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