Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00459d447aaa9749b9418d39615f5c9583987d6fbe1031cc0854b259efb2a574' 
  AND token = '4gDE6jh21Q/qnupGUe3ni2DReDprGusH/09ADhpg2UU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}