Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b47d0d974aee1d986db4c43246ddaf7205e99f6fa6419a64d2acbda41f65f672' 
  AND token = 'bq7gPbn2NVan2j+easT2er5fBhEqCEItj2ukPKQGe+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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