Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b05c581bfa24ae3ebb1f45432500a5760b36b9d1ce2128ca22f87837ec2ce78' 
  AND token = 'MmC3qUPwUrpRw92YmqkzO0Eis3gjQQtU2eTmuWkt4yA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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