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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'e05bc568b8f456acc35ed6f2da4fc2f1e0805d017ec01aec1dc7f0a6de402ddd' 
  AND token = 'HRGL7X0aIWvp6Clirmmgx0eQQrDo9yY3pY/4CyuvZ0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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