Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f3666931eb5e72560d9c9933dd260607ca0a110dee78bba21280de25fbddf7e7' 
  AND token = '1wiTw781MO7KeVlb7/vRdsN1G2Yjxwbm4gDDQNF7NQ4=' 
  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"
    }
  }
}