Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84de5636c11ba2f354ac58a610fb3b7b4a04211b6431683e8317c2efeccbac16' 
  AND token = 'OVPtYCrUOfoUyDP6qmzsxjJDmr3OidSrX4xKZyKuouI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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