Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e80b97dcd7d2d7a1fdc4ae2cbde772254e62db101e495d34be588339ed4de73' 
  AND token = '0R34uu2XVFcXVa1IotWgJ3dvKHxTlMD1dq4LYOcwegI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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