Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '367bd63644daf245cbb0c51e603c3e8afac21ebead2631155b50bd156c0e3d23' 
  AND token = 'Gx6w0+crWMJLbNABMvALhMJm70GH52JjHMIKNGIaHcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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