Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec5c2c10ef39fb629f180b11fb9bcd0d4811f892354e074237187a8120dcab8e' 
  AND token = 'Vk8io7uvBDbI9H6iut99qLP0s11M+Nll2il5DxdZzzg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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