Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13cc78ce943e460988190f78bfcd80012fbf21a53bd16421ecf3484fdb846022' 
  AND token = 'kVdU1TOZ8OwoKbq9J5H+MSTOzwCDw2MvSwpeAmhhLhU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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