Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ac25f3e540c40a6449672634cdfeb5516ef9f5460724d715d38a605f1538953' 
  AND token = 'OiURW5jpKof//FZ4Ph21rtFkEFjkI/SM4y1AUkIOYjw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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