Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '486a2d8714bbe3f803d9f7d3c4ecb8ab2db82c42cf207fc65af929dd6f2d0018' 
  AND token = 'iDJMNuyPLi2ttbJD1H1TFO8TlDyTPKWzi0WMFBHMmEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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