Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '258f3babebe9fd7edd9c8aeaba82102d97fdd003ad83a61cb1233bdb3e6e1f45' 
  AND token = 'AT4qvx3QmRNKKixKDqwWHK/JSNdkDPYg6vtaRU6f+uk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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