Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1a58f0613db50f944bef004280ea768d4e0d14610f33e325feb4666c3f65d06' 
  AND token = 'VUzSjg4+kNSnT9OrlqnyTWROFM4Rt2UDQMO35Wig6T8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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