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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cc166328ade32dbd47257ca30ec5f7a6ec6c3087406971e622ecaee3ea5ec475' 
  AND token = 'x97zjl6Se0I575J5wQfnmOjG1fU3tM+rxf0/4xlHswI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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