Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64038c842c45a92e4289f026bf96436749509f6c5f9ecb44cd1d303ab46fdf86' 
  AND token = 'yKWnkyCkjncH1fONb/GAOuph3WQChJQdXMXkGpZvgE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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