Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ecc3c627b50c103ed5086d7d63b8690c22ac27d4810086e0cf891f14b9ecb23' 
  AND token = 'aSxtOEzETo/+7MXXhsEys3nM5tgnsp33NdnI5Eg4hgo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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