Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7be9cb5c20950aee55236c71b2e7929649d34c497a3617d303a0f1ea39eb371' 
  AND token = 'a82uNBCGfXbnK9JoBOuVKg6+d7cRt/pXnQIM5C2X/UA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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