Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7be977e689d89081396b6cfc6103aae5b58d24bfaad44c5681127300e3b3e1bf' 
  AND token = 'P/Z/AAhbdHe6a8hrDs5piwNlzxh7CfxQsn1WRnbv3wQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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