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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '651d24bfea991caf0ab988bdd0d395be87f0d36c661497b59bd6b9181070f4e1' 
  AND token = 'rvVMrpB7tN3n86zjjwImkfypQRo1fIRxlzmHoFJUIRs=' 
  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"
    }
  }
}