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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'bd14021cf3d52284cd3651a8f6e90c3433c3a4c6a81912acd6ba65b622c6ff1b' 
  AND token = '40CTYd4I1SEnhNr0USvnNtOX3TZ2y2IHxFfaffzjyo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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