Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbf409455125665009ee4bb183cd639103810eb5ac772ea40a75fa863cc5a2b3' 
  AND token = 'SBrrpkQ1dz1EGGeK8c7PVKRKv2NTG9JEedfIaBltL4I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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