Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64722daf3c4747dceacfb7e6c36468fcfe24e1deb9c907fda1205263c8c106b5' 
  AND token = '3CyVdt60hiXn9TFxMd6PcCz/vXPlgciDpNnykxRUrYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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