Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f127532498652992c413d1ecffdf1c2a6e5f94d31ced0f54f93b843bdb58d1e' 
  AND token = 'zSPLgrCnoUYs31XxRd0bqdEOuW168/Hvjw3B7HxLwo8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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