Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93332184fd201b54818b128b0a26ceb1cb3f18585e66261c0f654f53db5f6ffe' 
  AND token = '4MORDyKzVgEAJ6yLss3HSwX7CPy06clefr7F5f6cXE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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