Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2250389564a2414d8a35a1b235bc7bac07cc51f0f1e2fbc4a00f63098277559' 
  AND token = 'tbwwAhowWeJu9a3tedSppH+Al4jjG7QV4lXWBpbhIgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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