Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0c533cb3a1d5d142f531dd212ba605ee4db09f3b3eea3b6d837cc83bb358798' 
  AND token = 'HCWclSh4yDCE+jKd0ylEtd61t2dYfFV84ayPEtM0BWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00066

JSON explain

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