Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fce1e34faafcce653ee6b781b6ba7eac9332828a46bef81937500b4701825c27' 
  AND token = 'q0w+XqZtCM5sOaD0kbLlQ61b/VKnh43kKkq5aoe6II8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}