Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '037a8a1d9344ddbfbffe05f4963cde18000031d7d83abf1fa15b29fab0605714' 
  AND token = 'c8iXCBYsAqHTPDcVnPefLnJyxPNKtDp/52ps8EqTAXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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