Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '89350c95d760e84fd7514e77481fdeb50de4a095a2125d584a2a3ed05d013deb' 
  AND token = 'HxdB5dpi61oS8BFqcjjGfHNNJYFWBoIfg7vCcNojhpE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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