Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bff6d369943c22ab556acf2182932fe3bdec624a6eebee52ac26ddab51f12da0' 
  AND token = 'XEvagLrPpC/vNLbTP5GwSfz/vwWEw/PENnHg0AoEE9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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