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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd3f0cfa75a1a48b4163b8b5fa9e4c74fd220f8796673c173ea61ebf1fdc0fa5' 
  AND token = 'bxZ90FStlp9XRnl3iLPefjYn4ZF5Dc+YN3YlZj2DVGo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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