Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cd29ece048c734a0a2349daac7d4584120fe75b233ab5cd8b4044538bea8e95' 
  AND token = 'pfff3v0r8B9R8WdppT+shMt0cje0XLkAUN7lTOkFB+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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