Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '364413b57c2e325503070731eb30ceb777e5c80aab319af20599bea94c483bf7' 
  AND token = '0s0M0oVRKkDwmounFpc/Gum6Iru7ZQRiHCMRUsZh62U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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