Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1bb616542ead2779e9125d38979691105814a1269de0a7ec8010cfba135f7f2' 
  AND token = 'lXlvGz2uTIkWsqgBW8Vj7uchPJTCHk5yI20wV8i3TX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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