Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34fe611226a385f16b864ed8cffdbdd1f59d3342110471ed5b124af0010b6c27' 
  AND token = 'F4f/CbjJv/S5gnUe9H9we/S6IiDUvb5Ab6OeR1uuf0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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