Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c50a8c93b3259fdc103b86ced49931beba4f7b1145ebb2b9a97c13d03da3d95' 
  AND token = 'sEujdMWm/yE8qrautGDpXTSvqe1j977hLX03lxnN8kc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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