Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c41430e81c6fdb9348b5a53fc689d64fc92e05111d43da9119003545a080967' 
  AND token = 'kWmIy4hAF31mg7Io8xBACQkBbVby3wWysy7Uf2ePAVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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