SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ccbd2ba2da1fa10b355208f2c533b658d303c135484ac390197b8bc3130a4140' 
  AND token = '5YKpogB8QPjNamqjzDq21lXavnWiwITCQNhP2GCDMOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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