Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a425310fdf7fb3f92c418c6cded2e1aaca4573d8a8244a0769148d83aa741e26' 
  AND token = '5hbzypVUyzRd0x8XEeXK5RRrbjwJFVKFz/apzn6O73E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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