Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d97dabbbb69f5ca15b76085c83f5abe9c68305d7ab7b9398d8c1cdfc5c098af' 
  AND token = 'ZrAqC5LvxynpHyAjtoh5qiBTZ+L4P4ZYWP+qt3SaIZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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