Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9000bb0edc4041080fb7708473eed2b8af217c11faba2d74c20cf7ffcc0ee0b7' 
  AND token = 'TF9GYtOXow2JfeJdAXd417q2M9wRSU3jMKGy5PXFQ4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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