Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4749d5e5109770b05c51b80192799479a4dff44ddfb6abd5ca22289cf4742b7' 
  AND token = 'r1lTqVEyE8s1g9YpzCAJr7VR8WVjF6SAZM/O00p3oTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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