Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70ebedcc83ea4be91af82c573dd8210c4b9a24a3c6bb266e4c4d444a91b9a900' 
  AND token = '/w9TBV5dWpWtliMykWT4dG4DiV6C24mm1omxNr7WGDo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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