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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '081432e9de3ca23415f052f91f31fb9c5e6648c295035eb7c5cfd8acd010c3ab' 
  AND token = 'srdpp75ZiMA3toe6taiFdhhK39ClE+2UpGd5SLMLfn4=' 
  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"
    }
  }
}