Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc323b9eb7d213d4d000ca4c47237eedfebf81a379a32665b912c32cf3fe3b0f' 
  AND token = 'g3yOUrXM3Wxi/reR5F705XpkZZ8iD8KtcIQVOjv46xw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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