SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'ae1525acdc3828408ea0f1792a7c4107921d1d8137d98dc06bf303c89b62947b' 
  AND token = '+GjIZIspwt12tD48IoZ55yPmi0Ywh0pse+ROLY6GGqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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