Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19e22afac5306fc4c6428e36ce1550475a15d482d3652b6fdcc544ac6d99cc5b' 
  AND token = '+tmz8w5mtCbJtPtWO0uIB/H1XV2RY55aT1NlCT0amOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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