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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '1e30390002b4fc7a7256af7a5ba69ee4dc67b7ae6a8e83f3fd00943f2b8a9172' 
  AND token = 'a21jtWuwRl/PS1h+gxMyF4eHu+slMsotXJVct89FA7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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