Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c6b487cbeaa869c1b3a491452e070ab30ac5bbe05d20ade0f70d6687110b2e7' 
  AND token = 'yPNEGHYYvstoDfM7TGY4pBOHGaZo03tB1EfN3xFH+Jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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