Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa2628fce41a75950cb05162442c1b56ee4db7b2bcd834c1cb8f145c3f08467c' 
  AND token = 'iIPz2p/c8NEIyi84IfUTqAe2OMJd6WtkULxUsK0nb6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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