Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a9bd8e0d27528f98b83ef445ed717eb4b7c3fa8a4f78d94d7dab48ee85a3e25' 
  AND token = 'pH0n3oV6ufh8kYM5xGX9Ebr9fK219R0WpOGSbwoQ4o8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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