Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '611105b61bb9bb6cb99cb9eb45cf8ba9baeddb344a2018877a0ffa8f9586276c' 
  AND token = 'fB4HtNAEw17CmIfaobAwKOAdmbPkSwmxeLa5DO2t4fo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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