Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e26e07c0190ac5a48b62f979ebc43a0edc8307538db396e0cd120e717fb6fcc' 
  AND token = 'lhyHHUtkchxFjRt6bTr1ZfxkZuET7HwuA/ov3dsoWg4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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