Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42071d2e2506580a17d7c1cd550348b20060ca02f193f8517dd81e243bf18d87' 
  AND token = 'kP4lAvTUDUDXrw3REfyRvSOIexx0RQk4o/6ruzeun64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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