Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66fa8f04147311b4ef5f7898e4e7d671c1809967ec1e3efef0da5ea9e33d071b' 
  AND token = 'ZJlG858eoMamL5npSaeX08B6+UnCCHVUOomEubPxvXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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