Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86d1946bcd07e53eb789640501a36a8c7ffd079e037c3d56cebc72187b2f123b' 
  AND token = 'CXRYTSQ4k82jH83Hpfxb7WpCmtcNwmH7fwgk5Ru7D7k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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