Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11547f90cdaabba5ecf02737327384464958d8a32e8253871813b53344b9bcbf' 
  AND token = '/4Ngd8ST1KKjrDp7lMbMbTKBlrFbZO3FN/VzNqhi6M8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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