Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bd40f671171a9e44cd3a77c119d56e6496845c9fad615e21b0d587898a873c7' 
  AND token = 'fZaQZ8rmhsfte19tIFqNttJeDCVbxYeMgcmg7kcgv5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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