Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e05037687528208f03f2e719e324e73fb34041d480f7c7d51e8cc4757f2d4b59' 
  AND token = 'GCKx3q6aRrJbzodRMLb7kaXkBneju35T6X2sYXyob1c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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