Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd657efac0f2e3d28d9c4552321fd9dc1d60e4b69f0f1aa5cd58921812965577' 
  AND token = 'KNfng71dycJOqgGDQUGn/bNu+fJQpRMLZj0gyxNr+HU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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