Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e776dcd17c51fabfad03be677fcf7736d349a1c660a2ecf1fac219fbd2755bb' 
  AND token = 'UZDtAs6z37yoihYFKz1Lo7byZyLmTENn6bdwDgn7rt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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