Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ebac8962c98236d61c96fd133d9c0469edeb4575c619fc03c23405673da0e44' 
  AND token = 'Y1Hw7WIWWajUvhwW7HuS34Wy5yt5qHUiL8lhTBWz7GU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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