Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fde3d289f314a5a5876ebab3e1f87ab5b06241f46282c52ab821fd2119fea7dc' 
  AND token = 'TQVJN52kIpjBn5A2UJ3aOdxpL4Hr0/XyZJ+2hXl8i98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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