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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '066a52587622bc0569df761ee8a558bc3abd2e2d3b6112d7334e7179c3dbfc31' 
  AND token = 'JY2wRMiUqnZiyFd4eyQnxw5YyAyFjX7F8/zDRY8ZnkA=' 
  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"
    }
  }
}