SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '43cfe33d21edff0255adbb072407aba4cd424d45a296302925600bf0e27f9e25' 
  AND token = 'h4qxVTEqxvXjUP7z/hGTCllZuMMpPnDMwY6ci0GgvQY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}