Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ceb79abef5eb393dfb25c9980ec22d49e6cb541d79a89a6483ee116197029c51' 
  AND token = 'OX5SB9X8tezLkDfdk7Q8pSd1cm367mVd7e3dqrKhf28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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