Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c12eccda789f51ead3aa1c3cf74faf3c640abd6571ef4fbe40fd16ed9fe6baca' 
  AND token = 'Fxjg6XLnFIzyfeCIzHF10Qr6xU4zUUj75WgC5t/OnYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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