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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0a0ce41b7bd45f58c4e0c06088ae1e471e74a6f60b22626ac749d8083ba0bd4' 
  AND token = 'WMFObD7rnZjDElsFHm33cmLmxk+0kLcTXvY2zMmS1sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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