Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '26d180cf5c6d57a3e5254bc968937656e756890137119f696c978f10c47df587' 
  AND token = 'zUSu7G3Q4SKGTkAFFCEE/dn8DaqUVdeWc+LsFuxbJxs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}