Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc548d15a9f247c52041f020b794e1a238fd561e728a8bddfe6caac18e0801c7' 
  AND token = 'xL5oexHmOBIxUtcVGhDgqKDHItBDTF3C1hcyz1GUNTI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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