Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '968f387ab3ae5ca37c8ae99277f67a61a709db6cf9272037552ccc2b97a4af3f' 
  AND token = 'laPHd0jitA7hFoqb58uok9/mrEegyNYgOaucI1Z1KPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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