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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '099676f89ac86eadb220df0d072971e04a967d5791dc36ea217edfa7bb3399ed' 
  AND token = '9udreW4rU9P2C8BxC44O4AOKX+uFTPVudFBrQRjjCpo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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