Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a31233ad4a51e69d69e4b2be90e2976af1d24d5175595307f610535f682a6f6' 
  AND token = 'SgO4fyKLOZ74G3UbfFook3MOvthe2wp/+DB5yd/ZufY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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