Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90f9a64f254befb91d39f27bd3387de9c0f08dcd2bcde2dee68358c03db63be0' 
  AND token = 'xESg3PFG700thLCPZSBvqAn5ti1RY6xM9vyXsOyNDHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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