Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb137e7f006631dd51bb457572650c51c02f254eb5f6e32b82201ab0e744b33e' 
  AND token = 'itQTavyDv8GlzyzIwJ0UeCSsrQO6DGFk0dDubG+fnzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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