Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95d723b770fc86d3b14b323b86c933ebbdb3430da67659e1bee6939f29941f1c' 
  AND token = '58dkJDGD7e5dwn+F+n51wsxevm7D+4OsDVN/LoSyO0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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