Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8cf8c5502daabaa299bc7812504a6272a344f9020a824ab64cbdba214931b2c' 
  AND token = '1dAXkrOrdTxTp8fi9Bidi1in+XJq2WV03tCb4okyXe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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