Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f83db6b395862a3ad7161f38365ef12109a120514b7ed79692f7a11c74a7393d' 
  AND token = 'F03cbBBT4oA+JB4IeiGCt96nYNU9ZJfHyBONCRyFj3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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