SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '95a7da3db751651570c85935cf4e3fb9cb62abbf7df4eb5b5db08a364bec6ff1' 
  AND token = 'aiiw/qBoWWZ/F1PUJQ/ssghOjrB3f5Syq2dn+UtkXnY=' 
  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"
    }
  }
}