Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46e7527b5f862b59f0d2ec2d627973822ea488c15703ed268223830a7098c7a5' 
  AND token = 'pBfwLi+nthsWe6Twm6mbutd+8LUCzN6ZZk1nqm3iOFM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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