Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07d76126ea81cfdc74ba3903c5073742fce4666c6359efff9d182d38770fb4cf' 
  AND token = 'hz1vLbzoqNmAadd24RdGLHwhTFgM08F7D2zML3miUqU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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