Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1d8fc6e23556fd5acfe178892319d7d08fd99a42052fa67ba4fcd260a26760a' 
  AND token = 'HROIDHth+g66AF962oaGCO/nmAm0ezgPcC3sEYswC0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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