Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03670e6cb759e1b0a683e56d29c94dae31c1364a0e92073f94255fbfa44ab9d9' 
  AND token = '47vkhiP58fBXfBsLhr/pV3sCuO8D8FuHNjEonrhbVx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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