Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32d84925ede72aed8c4408575795a27994e06fdb534fc8d73fce74a4da561f17' 
  AND token = 'ir1g6krReD+EOrreW/g/1wKi7lLFW2pdB+/RF2OCUes=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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