SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0e9f54c8faaa801655545c7bd71002fd3e15e6efcfbc246e365be21ba44d81b3' 
  AND token = 'QMEdLterjtqBZ2jYVkPdE1K2CzHgtmp8+pq9MyGoJAY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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