Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2061e2a17ac69f29440c358ced8f88cd6832a3231d3321c8fdf40ec04ee817cc' 
  AND token = 'ZylqT8on33uJqgA+frDuCuCQ0FP9swJKTkbvQtG0IvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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