Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f5df7b66e4a62f40b9fa4124bb1a1900ec8b097f086d1c985083afb265ba561' 
  AND token = 'YD8gXJxNkuoX4riWVhLpYF65u5eKjrOcH0BouQofYeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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