Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e3d007a041c3b983552895935120058a2f0c10919d94ed1d746435e594e3325' 
  AND token = '7tVB5obFAl7n77kA6QOnGFNUB9aou4lxv+aBeSow+VQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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