Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f41b51894ddfdd667a916535d727139f0d1352a69458224e0cce589766571924' 
  AND token = '0kuJNoqpaMB1n9BIxa0wTr/qYhEoHZrVHDdQJE4cM6Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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