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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd9d5959d71bec9f18dd1d0093d98a9a486a4b7acfcac2243a997b78c30a052f6' 
  AND token = 'Y54JlOYz1knMJNnnBhp0H0PlSMhtfZCk6/kWygsdMG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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