Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '18a5bc3101d380acfbebd35b64b8366cebac1f5f1de11acf697d3b80c3e71d48' 
  AND token = 'ssl+hstu7kbhGZcFNtlJaM8O11P0A2iBnuq6G6/gt5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}