Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be35351338edf1644854ff65fd0c0220fa811418f0ad8c0479a39bf3a1cea68e' 
  AND token = 'daHL83JmaN94X4d8pZrGkiN6lckXIt5C7/jRhS2WPP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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