Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d7428bebe8e1323ee969576af5967bc3394ff0bb0e2c26c71b81cbc4ab9436d' 
  AND token = 's3vgq6LVSKL0Yd1PEskmskCWrnGibFL/b+EzV6bCnZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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