Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '79d0142074e752f303250f795d84d1bc56e8c772739ebbcb187496923f852ce3' 
  AND token = 'Qzf9rEQxLFujsHjZxE/IjUXLG5Ravffb6jzns6kqrHs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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