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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '18971134974eab9855e3e089490a5f549f8684a9b03beef61d372b11429efcdc' 
  AND token = 'ey7k3cJg64yJs6SJVzaYOmBLc9VTqlmz9m93huf6XZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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