Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f0d9b80cd858105ee21326c974e9842ea9de863b5c3caad2d81bdecbd95cdbd' 
  AND token = 'wM5dXQtc7uxvDS1Jlw9S77CYjvhz7DogCZXKzV23YYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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