Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e47c548edc6d054ffbd247892cac9b41ba4f6b377d02ec53b49f5c010fe59034' 
  AND token = 'o3rLa+7bnMgR28Z0c1ndGYPHcT6BH/oX2pyaKxJi5DQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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