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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95f4c86670291938077e15b906018b9c790ae2baa6771b6f60a142c8b5ed10d8' 
  AND token = 'p2Dnx9h52x0tjckjfIiJZQdI7CBe9rfNQOFl7kv5rmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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