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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'fbecb9b3f2fc85015064f24f4245d57b6e1f9aba888836f7ae0f102832a4e439' 
  AND token = 'bNKQMAXkAn+ebqF5RjWd+NvqpenWOU2j93ZvbgMsiNs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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