Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '360bba8f80edea9d87bdd4d1d752d7521eaeeb1d7f5d5f8fe4ff65733c5e6a9c' 
  AND token = 'UjPKUonZNF4WpDxBfDjoRly6WyOFIQAOVmj6M3QBZEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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