Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98f32eed35433b02931a32ba737406974c950aa1e4b3cf0d88d74c5ce0a4db8e' 
  AND token = 'Ghd/9DLrdHUDg/b4UpAtOs7/c/KOT7VcUhiJEpHp5kI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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