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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '80fe442ddf312f77f6a4abd5e2db1e86061a4b1beabfa6381e00620d51ccb36d' 
  AND token = 'PkqCB9URUS6YaNMg5q4d2ARirSKso8rqLB5k8VRqUAw=' 
  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"
    }
  }
}