Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7cf35af431f60737eb5e3d2740941da711f0f27f4acc8bd20b860375056ce9ea' 
  AND token = 'KsGaLM0qGXU2Z7flPSm4a89O4IRCxVk0ow/+yuw4xuQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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