Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52b9b235db5f35a44308564a2694ab52e72d1bb0cb3a18da6cfa0048b838a966' 
  AND token = '0DFWOONckCHSYMP7x+CHz4zszu7u6G+gg8OFMgp5krM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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