Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95147a9decebc905268d0f532071cc722c6f2008d16213b9f560f36cae297b3a' 
  AND token = 'snjGUlWOBuTHLSSI/oz+BdsBbbe3OhxWQraHAuIhLY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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