Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76e32b1eb2f889901bf98bbdb4d699cdd5bd399b5eda6dd474a413a5e6e04940' 
  AND token = 'jFvcWgp1XeeWHBi1oJBU6lrca7BQzMejV/ORExrZ/Fw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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