Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5115de9f53c5232f7e0f01c28faef6405d1cc451a41a6620e036f292419fecd3' 
  AND token = 'SUv86r91YS817tgBGwyARRom6m76l//TOUTbNQv0Tc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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