Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35ddb2163559dd8a7b8fbe1a02be4c63da8c4a01267dd4e26c84108538c108af' 
  AND token = 'exCcgJbqKXC22vcqI6Z2r9Ru+aJWHV88bTX8+oY3t/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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