Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4939d11a173eddf937fb046ac83211ded1461b9f1701f7a4f57632539a63f12d' 
  AND token = '0+dV1nKeqv7a3+svkAjZoh9uhWDL+cfN4WwJW+R3DLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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