SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '0c7fd25636e4c37c2d0ccdd88649d9133c05758bfacc82bb299bdd4333951d5c' 
  AND token = 'LkRaKMXhcfopC75BAiL2FzxLwsuO+lqXj9RWROYYV3w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}