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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95e7922fd1802fff082728de8fd0e7dc11ab624659fe6ed9505b8c88db2d550d' 
  AND token = '5XeV2DoJnKe7k8nUnhKoWgcDNCmlNX75ZyLrv+HbYS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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