Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b250794c84b80316abfb23d2dcbce2cf7078fa625dfacb14bbd850681772765' 
  AND token = 'ihUcbMNW38cgRK2nKKKO6SMwua3Q06vsx+UIwdvjmGM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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