Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f743126a30f6805fe8ab2da7c6e87cda1e665de95fdc8f9c00722b6bea91873b' 
  AND token = 'zHYif9uWkSq9D8xtk9DquLaIHGJ+VrhktwAF5ZkCKdk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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