Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb1f0ab06810ea2450016fa0de68674c113d786575a26692208fa027633bd2d9' 
  AND token = 'XM1Z/5/D9skNxB7Rzq/7Mv+fWowsUla7AqDPoPkAqHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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