Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9132da5e98e68e8aa9487ead36309310872cd332cd6d1752c12ae204ab6394bf' 
  AND token = 'TTUGfDn/drzusxsH/Gj2o2G54az12piKxKUB31Dg8VA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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