Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5f32ed43c463b090f5f270a13020394a0ae7f6573bc6e6935b9d23d94992eac' 
  AND token = '6SkxrC7QYrn90vjDwetJRHK9LDt4WqJV+O6fRXaqf7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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