Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc2506d87608dd634bca359863347dab8f8feadd80a28b93c56160847dc5b3f7' 
  AND token = '94RSW38/c4jkv1hxFfBM6+oWs7D2tZpJELAIPyNAzhk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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