Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5440d443c68b3745de2a559e9611165614e2209ac16eac225f69f89f4e6d253' 
  AND token = 'jIqEnN5C4bVMpLKuQoltdcuEZYnrkLyKu/8NiCQjl1M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00083

JSON explain

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