Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ce5635292f34e0c033fbf93490dd6c557da0760dc0c47221c7b9627f63582b6' 
  AND token = '0PQ6qwX12Dgk55dHmf8qzYzjRcrPkvvPSoUiiTvZBNo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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