Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'ae65c56f9760ac3e3f1ceda275304b9c3adeb432df4703c3ca236432d94db1ac' 
  AND token = 'hXgOtR2/7LKjh/4gGy+dnVefke7RAOnKKgLfY97PpPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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