Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ce76ec5c2a08769ecc3c609b90670f47175d1d4334aab5aef8aaff5c951e1785' 
  AND token = 'Yelot/gnmBg3myrNnl2Kt6pq8VJf3FIFNFkyiZ8eP3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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