Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32c54bd5abaa505f5124aa92ab1925b16c97b4bd026cea21f4741bdad12ee9b4' 
  AND token = 'VEkUrvxGQjCvkczT1GlXST9wyFmnmvwhAfYLj6fokIs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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