SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '2fd54e398431e78e501d428afc2b46061f54df0e1643d820607fc84b02b69ba5' 
  AND token = 'ciCgk1hZUX2EXm7uPe8sRpVz91UXZ5Z/xIKu91qGxCQ=' 
  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"
    }
  }
}