Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '136ff13d9b7d8ca8cab681946b17a0bb1d8b083ea080450ccab622d2c5d42199' 
  AND token = 'v2tbJLRjmc3hmz/stNGJrWO6P9G228ViXJeJTuiknw8=' 
  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"
    }
  }
}