Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef85dc8798b945525360df9c32cbf6d3e1a2a45ed5e295c119ea84cbf07e2633' 
  AND token = '6kSAcI7kq5+fHmjP62z27VaCSl92LHtUyPuIMjIJgtM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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