Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33cd463d4f374ea0c8179c161b1235e8cf6270782fac81ec1d751a1752c5731c' 
  AND token = '69Xp+uxTfqaZotVTdz1v6JgY4TpKdVDWNh74YzrcWKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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