Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46174eb252ecc4798e31f63e2e2eed8c7abb74a0ef087cad91b92060abf19926' 
  AND token = 'a7GHh2SyLmqbHPThy12FCVkodT8q1JOQask1sUyE0hg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00078

JSON explain

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