Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2465cb4637d57078cbfaea4efa2586b2e6475da7ea8ae7870a463ddb2c3a01de' 
  AND token = 'y+oAmiBkJrdo0YvjAGvQ7o8iyGnNIteZu0gjgLHYucc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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