Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e482a213cb0808a41b8b8414f1fa9cf5e7ca1a14ee05b2593d4e79d598ccc3a7' 
  AND token = '1VQI5UldX7XftpyEBrzk9zV1cVlEQXCeM6V9fEm9OB0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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