Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '3958d8a0bab0bf9d8587beb520ac211f7912abb91a11229ca8c1a157388c11cb' 
  AND token = 'oUCgm4yPdV3g8uV98Sg8a49n+fJozcy8sXKuhfVYPGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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