Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dafe4c0c2fa5748b3f45657c72f6f1e0b7e7a460d96d453fb62d3a666c8edbda' 
  AND token = 'OA+WBpgU3skzvklMJ639GlMec9X6Buopqtir1bLWyPE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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