Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'def706f9f5dc7c3459d58b31433fb0501cf4d6dc96ad00621a11a6baed5acc48' 
  AND token = 'R7oTYyhntzP/n43WrD6T6BAtx/4zWjO4cuFFYmYHXiU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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