Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '327b7859da144cb458a930351487022f04fea7f31ba5c432bb38d70331ea5490' 
  AND token = 'CDXlM04St+kIdau7J1EIBB6U4U/FUD/kz4MkUbXf65s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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