Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a5d375fd2a5c527ec50f617fc4799800a45c2d9781259d1a86bd1b9cb928fee' 
  AND token = 'ckBkCTv8oapY2N49S2LvP8z8XA/ZJo2jYWVc2FU249w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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