Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0deeda92dac39745a1d3b0d1422a23eea6851f14627aa18d206960caf62ffb53' 
  AND token = 'L1BtV9AeyrxQRUWNIZsboBoOcP/1EbpvWiJc+cEZiz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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