SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '725738db4d87dfd16ba6c16b59c4ac7b26c28192ca9513fa667d4529b84b8134' 
  AND token = 'APLwMKiKrdR2iCfYqyLPAWOPmEHuhvhS2VpfMFsEJII=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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