Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37900a6dae0c90f67ad98f7ace69c5253a8c4278eff09fd288cd328eda319623' 
  AND token = 'nfrodvESLj3LtwBRQ/5pHHonw0TqyW9k698s49C57vY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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