SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e44ea7b0e7f5d2693ff1bfc9fb21df8b82e1280056c73ac9bdbded608b701d56' 
  AND token = 'aIzyC3i+Bw2/YIRDtzTH9pDJHtkshB2vm62J/mng9wQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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