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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0277fcc38bb705a474f380b29081190b63b8dc5a84f2b0a29479d3ea29630445' 
  AND token = '1NTkkmRNA5hzx1ynDq8M/PSnjSTKp7XB5Y4G1EnB1B8=' 
  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"
    }
  }
}