Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47e90804a5309bc4c02282b57945f35b759e40744b3d8c699030156654502bcf' 
  AND token = 'Vms/E79uPew8VadZvDmkYkofy8SjE0MY5EcMc/tFM8Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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