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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '5455e66616982a3c555f4583b8861503661797ffe40c528a12ff4f158842a12e' 
  AND token = 'iQJGtEj8fj3Gq4G2KZ0/1umleBoc7OUTrt90D0bwBWw=' 
  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"
    }
  }
}