Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb074815eebc90598209c80003663fd6068cd6d5583a8e853b9b09dba43be748' 
  AND token = 'X/zZ61wTanvcyWNQRgmjgdEPSgaliElglPIryCWXVWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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