Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e610f295e47597ec63d4888ce211b58bba24c7b49b73c6ba3acb9ea33db102f' 
  AND token = 'dyRketHp3N4fjfrrO6PJNBTXsldT9RGmCT4gAi9ee5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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