Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8a6f7232b11736e277bec9541de5cd31f390290ddeae23a7c6c804e69510b742' 
  AND token = 'neLwqJVT8woncAZow0uRVgIqzOdh0qcBTMx6E1uNUwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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