Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65d56d95a46f6e1693a0fca76cab99898653d0af252a0713f5310391e4dd12c6' 
  AND token = 'hXu9ZE68A/bQePKo6z/fn93qiFFaMSCj7cMn5ywqyI8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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