Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9775329744016eebff4e62e5a025448ed170deefee25b665135bfca964f36b7f' 
  AND token = 'kWapfwb4JXG+FoNK6i0bkPwbNq7W3JgZIbfDT4sjnkc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}