Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c3783562342cd4d5fcf1f62fb84606e734a36ab35bf963e7367a220ccab676c' 
  AND token = 'mnB1V90ub0rRzqREGzMOIzQWcE3H+OB/+e/0Di/hB1I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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