Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c11efb14e42ea5cbc20c7c632933aefd0a348dbe4b78068b38c88bc337520c2c' 
  AND token = 'mFdG5v830J+vyKBWenyOWFX3lIimhgZJv1J5CwdAteI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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