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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0ae93a24e6698f7944bd6ecd0599cda1c29bac0a4c5007dfb82935493bde7c35' 
  AND token = 'igapMe2K0/AV1adl/XYLpnYoxIUf0QjlGvC2ZbsZ3Zs=' 
  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"
    }
  }
}