Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82a0b7cd3a5afe82054e1fe29520a033b5868f0b57dc5684f9e94fdf45b3781d' 
  AND token = 'rTjnsg26u2oDvMGNKeg4ladwczQaAGcqzIWUf2kJRDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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