SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ef36e4541b38e13a48c0803b127fbe0120f3d4992671f6bb148dcb96941ffa0' 
  AND token = 'P9RYaHNsBTZDq5smFxIVvr+PGkre0BMQbxVBlFgyy6w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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