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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '7fc07cf8119888c5376794eb06efb209543638e0436fd25cdd5922a8d7095f54' 
  AND token = '1bJN8i9wMcB9EBy/ANDEmO2t/TC15ixfn7ttxmLpYZg=' 
  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"
    }
  }
}