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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3b0d021d1e099faf20d929d525708ed7f10f7c1e408266c8cd48cdaf0ca770d8' 
  AND token = 'qQsjVp0o7+yegSwNYS0OS8u0/ZggzL7ICHcpgtniPUw=' 
  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"
    }
  }
}