Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47a9f56985291804607e0d92c591930583f60429f0b3ae3cf44000a109b2c60f' 
  AND token = 'mWcJ/XMdM/AjCW2xhHtzqHx2qpnOfP+SJ72yqZb+08o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}