Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e92a14a11ea37f9433e38858d640248a793995ec841ac1407d32c82fb14f0ae8' 
  AND token = 'PtycCaApxTcuz2p9ChxoEDTVoEwPU2s6oKy7W593PcQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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