Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8102f4f2534a36e65f2ae0aebfb3267bf76cac8ad9b696ca614431c74ad5c3fb' 
  AND token = 'QChWDpI3wttu0o+PvaE/wA0V4bsMaRVnXuljorvxjQc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00112

JSON explain

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