Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25fe84e50350160a16f93a8d58a06710d84c5f64fec95c009a2cd1c155f606ee' 
  AND token = '4pCUpG0HbTXnJPILz21Dpo5YFAX5gX4p4VXYZwJNHCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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