Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2582e1d9d160a246b5cd92841adeed0b1797bf52bd38314cf47b617b0a975957' 
  AND token = 'yd52OHPSy5XMWsWRMLbNM+2Lb2YwGPhl9nhDHaMVB3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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