Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17eafd201949164c354c43a94c304d9309cf7e0749132a49302f3ee0c2787595' 
  AND token = 'EiqWH3k9Ln5+F6QoP+hszBaZz2mBqXCBAncgyVQmnHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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