Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '896b5b74889dad0198dd04bd6988de428ef2849c8cafa618f96e02cc002f3e89' 
  AND token = '0xzQU1Yi9wqJSkz/W/VoedKVxzan3jaiFYa3K+qwvM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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