Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f7a101a22cf1dc0a41f0e814057ed79c8714fdedc5ff6c58b158a0cc57281e1' 
  AND token = 'IyukigPU01kJW4qQO3ZHgWZSZ9phtvgkAeoLWUWn3Kk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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