Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58f3bbed29e1315f1d145c713312c559adc4154f3760f3d7dfb264a5a653897a' 
  AND token = 'HySaaw2iVPtr6bbZjzkUISwcfQ5HK2OaK3F2C4XZwTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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