Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b69e060f3cbcbd563d9e0ac4640a1349a15e506977bff9cb2b047479521a203f' 
  AND token = 'IOhXBaSJ9xNru/afLbsMdHE+wzQdag6Ge/FcXBVn15Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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