Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9565788c04319bf77a49d8016467c22d719783964edd3295783f4e6cf2190ab' 
  AND token = 'BXHXvWMSIkOixx0ynjxKjO6Qmtef/WIhLcugtNf9IJQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}