Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d9be00d00e91e6fad7601f5387f99c7bff451e7dabc80ae9b069aa0674e4481' 
  AND token = '0gmGBRoKBXGzlnI5cIt7aDETu301/xGtkMNtX7WGfCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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