Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1aa80fb14f59b4ff0a2e4535fbe53892c3968da20f592db43b801d451054e948' 
  AND token = 'z1lUOuQueYzsOA16WYEYp7r1qYvuMmrJ4NOaDZb/OPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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