Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25e466f15586ce1efe0fed7b9f314cad6ae39803740ee1ff32ca54fa24d06f05' 
  AND token = 'QjhJnhCTwcFlz8BishsFu8+lhAsZBcRZvfIEbiWiOZ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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