Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db2ba6db282230b598959fa4570b88f3050179b6a34118c4251282a1daf770d5' 
  AND token = 'dqCD4WKUq++rsg8SQQ0Dy5tZ9F2KNo2opG5B/n7k89E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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